apochromatism

ap·o·chro·mat·ic

[ap-uh-kroh-mat-ik, -oh-kruh-]
adjective Optics.
corrected for spherical aberration at two wavelengths or colors and for chromatic aberration at three wavelengths.

Origin:
1885–90; apo- + chromatic

ap·o·chro·ma·tism [ap-uh-kroh-muh-tiz-uhm] , noun
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apochromatic (ˌæpəkrəˈmætɪk) [Click for IPA pronunciation guide]
 
adj
(of a lens) almost free from spherical and chromatic aberration
 
apochromatism
 
n

00:10
Apochromatism is always a great word to know.
So is ort. Does it mean:
a scrap or morsel of food left at a meal.
a gadget; dingus; thingumbob.
apochromatic (ˌæpəkrəˈmætɪk) [Click for IPA pronunciation guide]
 
adj
(of a lens) almost free from spherical and chromatic aberration
 
apochromatism
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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